Split pulley.



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- (Application med may 5, 1502.)

.(No Model.)

WHNESSES:

aq TTORNE YS.

UNITED STATES PATENT OFFICE.

CHARLES HENRY BICALKY, OF ONEIDA, NEW YORK.

SPLIT PU LLEY.

SPECIFICATION forming part of Letters Patent No. 715,950, dated December 16, 1902.

Application led May 5, 1902. Serial No. 105,980. (No model.)

To a/ZZ whom it muy concern:

Be it known that I, CHARLES HENRY BI- CALKY, of Oneida, in the county of Madison, in the State of New- York, have invented new and useful Improvements in Split Pulleys, of which the following, takenin connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in split pulleys, having more particular reference to the means for clamping the meeting edges of the rim-sections to each other.

The object of this invention is to produce a simple, practical, and durable clamp, which is formed of sheet metal and arranged in such manner at the meeting edges of the rim that a tongue and groove is formed in said meeting edges, and the meeting edges of the plates are arranged to break joints with the meeting edges of the rim.

A further object is to provide the clampingplates with suitable loops for receiving clamping bolts, the meeting edges of the loops breaking joints with the meeting edges of the rim-sections, and one end of one of the loops of each clamp is recessed to receive the head of the bolt and prevent its rotation when the nut is being screwed in position.

To this end the invention consists in the combination, construction, and arrangement of the parts of a clampingY device for split pulleys, as hereinafter fully described, and pointed out in the claims.

Referring to the drawings, Figure 1 is an end view, partly in section and partly broken away, of a split pulley and my improved clamping device applied thereto. Fig. 2 is a plan of one of the half-sections of the pulley, showing the clamping devices seen in Fig. 1. Figs. 3 and 4 are sectional views taken, respectively, on `lines 3 3 and 4 4, Fig. 2. Fig. 5 is a persective view of the detached clamping-plates of one of the clamps.

Similar reference characters indicate corresponding parts in all the views.

In the drawings I have shown a splitpulley consisting of semicylindrical rim-sections 1 and 2, brace-arms 3 and 4, uniting corresponding ends of the rim-sections, and clamps 5 and 6 for securing the meeting edges of the rim-sections to each other.

The rim-sections 1 and 2 may be of any deposite meeting edges of the rim-sections, and

each preferably consists of clamping-plates 9, 10, and 11 and a bolt 12.

The clamping-plate 9 is secured to the inner face` of one of the rim-sections in proximity to one of its meeting edges and is preferably formed of sheet metal and provided with substantially flat base portions 9 and one or more loops 13, extending inwardly from the base portions 9. The iiat portions 9' are riveted or otherwise secured tothe rim and usually extend transversely of the rim a sufficient distance so that the ends of the plate abut against the inturned anges 7, which relieves the strain upon the rivets and materially stiffens the plate. The meeting edge of the base or flat portion of the plate 9 preferably extends beyond the meeting edge of the loop portion of said plate and also beyond the adjacent end edge of the rim-section to which said plate is secured for forminga tongue 14, theadjacent edges of the loop being back from vthe meeting end of the rimsection, so that the meeting edges of the rim, the edge of the tongue 14, and the edge of the loop are out of alinement with each other. The plate 10 is also formed of sheet metal and is substantially iiat throughout, being arranged against the inner face of the other rim- `section, with its meeting edge back from the adjacent edge or end of the section to which it is secured a sufficient distance to permit the tongue 14 to lap over upon the adjacent end of said other section in alinement with the plate 10. This plate 10 extends transversely of the rixn, and its opposite ends preferably abut against the inner faces of the iianges 7, so as to additionally stiften the joint at this point.

The plate 11 of each clamp is mounted upon the inner face of the plate 10, and both of said plates 10 and l1 are secured to the rim by suitable means, as rivets 15, the edge of the plate 11 extending beyond the adjacent edge IOO of the plate lO and tongue 11 and also beyond the meeting edge of the rim, to which said plate is secured, for forming a groove 16. This groove receives the tongue 14 ot' the plate i), and owing to the fact that the base of the plate 11 extends beyond the meeting edge of the rim to which it is secured and that the tongue of the plate 9 also extends beyond the meeting edge of the rim-section to which it is secured it is evident that when assembling the sections of the pulley the tongue 14, at one side of the pulley, is placed against the projecting edge of the plate 11 and inserted into its grooves 1G, whereupon the other ends of the pulley-sections are rocked together, with their tongue and groove registered with each other. These plates 1l are provided with loops 17, being recessed or cut inwardly from their end faces for forming shoulders 18 to engage the flat head of the bolt and holding the same from turning when the nuts are being screwed or unscrewed thereon. These bolts are passed through the loops 13 and 17 until their heads t in the recesses just described, and the nuts at the opposite ends are then screwed in position for drawing the meeting edges of the rim-sections together.

The operation of niyinvention will now be readily understood upon reference to the foregoingdescription andthe aocompanyingdrawings, and it will be noted that some change may be made without departing from the spirit thereof.

I-Iaving thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In combination with a split rim, clamping-plates secured to one of the meeting ends of the rim, one of the plates terminating back from the edge of the rim to formagroove between the other plate and rim, and the other plate having a loop, and an additional plate secured to the adjacent end of the rim and extending into the groove, said additional plate having a loop alined with the former loop, and a bolt passed through the loops and engaged with the opposite ends of the loops for drawing the rim ends together.

2. In combination with a split rim, clamping-plates secured to one of the meeting ends of the rim, one of the plates terminating back from the edge of the rim to form a groove between the other plate and rim, and the other plate having a loop, and an additional plate secured to the adjacent end of the rim and extending into the groove, said additional plate having a loop alined with the former loop, and a bolt passed through the loops and engaged with the opposite ends of the loops for drawing the rim ends together, one end of one ot the loops being recessed to receive the head of the bolt to prevent its rotation, when the nut is applied to the opposite end.

In combination with a split rim, a clamp comprising opposite plates having alined loops and fiat bases secured to the rim, the base of one extending between the base of the other and the rim, the adjacent ends of the loops and bases being arranged to break joints with each other and the meeting ends ofthe rim and a bolt passed through the loops to draw the rim-sections together.

In witness whereof I have hereunto set my hand this 17th day of April, 1902.

CHARLES HENRY BICALKY. lVitnesses:

JOSEPH BEAL, JOSEPH M. PALMs. 

